wrote

I got a photograph of it when it was about 50
to 70 feet in the air. It quickly flew up past me and over the top of
the building.

I realize that helicopters have a lot of flight freedom, but it is
still shocking to see one flying directly towards oneself like this.

I think your altitude estimation skills need a bit of practice. It looks to
me like the chopper is at least 200 feet up. Anyone else have an opinion?
--
Jim in NC